, Volume 52, Issue 8, pp 1082–1085 | Cite as

Room Temperature Lasing of Multi-Stage Quantum-Cascade Lasers at 8 μm Wavelength

  • A. V. Babichev
  • A. G. Gladyshev
  • A. S. Kurochkin
  • E. S. Kolodeznyi
  • G. S. Sokolovskii
  • V. E. Bougrov
  • L. Ya. Karachinsky
  • I. I. Novikov
  • A. G. Bousseksou
  • A. Yu. EgorovEmail author
Physics of Semiconductor Devices


Room-temperature lasing at a wavelength of 8 μm in multistage quantum-cascade lasers pumped by current pulses is demonstrated. A quantum-cascade laser heterostructure based on the In0.53Ga0.47As/Al0.48In0.52As alloy heteropair, matched to an InP substrate, is grown by molecular-beam epitaxy and consists of 50 identical cascades placed in a waveguide with air as the top cladding. A threshold current density of ~5.1 kA/cm2 at a temperature of 300 K is obtained in ridge lasers with a cavity length of 1.4 mm and a ridge width of 24 μm.


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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. V. Babichev
    • 1
    • 2
  • A. G. Gladyshev
    • 2
  • A. S. Kurochkin
    • 1
  • E. S. Kolodeznyi
    • 1
  • G. S. Sokolovskii
    • 1
    • 3
    • 4
  • V. E. Bougrov
    • 1
  • L. Ya. Karachinsky
    • 1
    • 2
    • 3
  • I. I. Novikov
    • 1
    • 2
    • 3
  • A. G. Bousseksou
    • 5
  • A. Yu. Egorov
    • 1
    Email author
  1. 1.ITMO UniversitySt. PetersburgRussia
  2. 2.Connector Optics LLCSt. PetersburgRussia
  3. 3.Ioffe InstituteSt. PetersburgRussia
  4. 4.Saint Petersburg Electrotechnical University “LETI”Saint PetersburgRussia
  5. 5.Center of Nanoscience and Nanotechnology (C2N)Université Paris Sud and Paris-SaclayOrsay cedexFrance

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